{"id":19023,"date":"2024-04-15T05:33:52","date_gmt":"2024-04-15T05:33:52","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19023"},"modified":"2024-04-15T05:33:52","modified_gmt":"2024-04-15T05:33:52","slug":"if-a-load-resistance-is-1-kw-a-stiff-current-source-has-a-resistance-of-a-at-least-10-ohm-b-less-than-10-ohm-c-more-than-100-k-ohm-d-less-than-100-k-ohm-e-none-of-the-above","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/if-a-load-resistance-is-1-kw-a-stiff-current-source-has-a-resistance-of-a-at-least-10-ohm-b-less-than-10-ohm-c-more-than-100-k-ohm-d-less-than-100-k-ohm-e-none-of-the-above\/","title":{"rendered":"If a load resistance is 1 kW, a stiff current source has a resistance of A. At least 10 Ohm B. Less than 10 Ohm C. More than 100 k Ohm D. Less than 100 k Ohm E. None of the above"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6abc8a8bbd9f2\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    At least 10 Ohm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Less than 10 Ohm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    More than 100 k Ohm                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Less than 100 k Ohm E. None of the above                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>A. At least 10 Ohm<\/strong><\/p>\n<p>A stiff current source is a current source that has a very small output impedance. This means that the current through the load resistance is almost independent of the load resistance. In other words, the current source will try to maintain a constant current even if the load resistance changes.<\/p>\n<p>If the load resistance is 1 kW, then the current through the load resistance will be 1 A. In order for the current source to maintain a constant current of 1 A, the output impedance of the current source must be at least 10 Ohm. This is because the voltage across the load resistance is equal to the current through the load resistance times the load resistance. In this case, the voltage across the load resistance is 1 V. If the output impedance of the current source is less than 10 Ohm, then the voltage across the current source will be less than 1 V. This will cause the current through the load resistance to decrease.<\/p>\n<p>The other options are incorrect because they do not meet the requirements of a stiff current source. Option B states that the resistance of a stiff current source is less than 10 Ohm. This is not possible because the output impedance of a stiff current source must be at least 10 Ohm. Option C states that the resistance of a stiff current source is more than 100 k Ohm. This is also not possible because the output impedance of a stiff current source does not need to be more than 100 k Ohm. Option D states that the resistance of a stiff current source is less than 100 k Ohm. <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n   <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div>      <\/a>\r\n    <\/div> This is possible, but it is not necessary for a current source to be stiff. Option E states that none of the above is correct. This is also not correct because option A is the only option that meets the requirements of a stiff current source.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[682],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>If a load resistance is 1 kW, a stiff current source has a resistance of A. At least 10 Ohm B. Less than 10 Ohm C. More than 100 k Ohm D. Less than 100 k Ohm E. 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