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Mdcat-past-papers Quiz

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81. A resistor has a resistance of 200 ohms. If a current of 0.5 amperes flows through it, what is the voltage across the resistor?



82. If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then power of:



83. The maximum power transfer theorem states that maximum power is delivered to the load when:



84. In transmission from grid station, power losses are minimized by:



85. An electric bulb is marked 200W, 220V. If the same bulb is connected to 110V supply line, the power consumed by it is:



86. Terminal voltage "V" of the battery is greater than emf of the battery when:



87. The power of an electric bulb is 100W. It is connected to 110V power supply. The resistance of electric bulb will be:



88. Power transfer will be maximum when:



89. A low voltage supply with an emf of 20V and an internal resistance of 1.5 ohms is used to supply power to a heater of resistance 6.5 ohms in a fish tank. What is the power supplied to the water in the fish tank?



90. Arshad is driving down 7th street, he drives 150 m in 18 s. Assume he does not speed up or slow down, what is his speed?



91. The ratio of displacement along diameter of circle and total distance along circle is:



92. A wave traveling with speed of 130 ms⁻¹ having wavelength of 5 m. What is its frequency?



93. A cyclist is traveling at 15 ms⁻¹. She applies brakes so that she does not collide with the wall in front of her at a distance of 18 m. Calculate the magnitude of deceleration.



94. A fireman wants to slide down a rope. The breaking load of the rope is 3/4th of the weight of the man. With what acceleration should the fireman slide down? (Acceleration due to gravity is g)



95. The instantaneous velocity along the curved path is:



96. Slope of distance-time graph can never be:



97. Acceleration of light travelling in vacuum:



98. A body covers displacement of 10 m towards North and returns back to initial point by covering 10 m towards South. Its total displacement is:



99. Measure of displacement covered with passage of time is called:



100. A train travels on a straight track passing signal A at 20 ms⁻¹. It accelerates uniformly at 2 ms⁻² and reaches signal B 100 m further than A. At B the velocity of the train in ms⁻¹ is: