81 Electrical energy is measured in___________________? Physics Medium Full question → A watt B horse power C kilo watt D kilowatt hour
82 The resistance of a conductor at absolute zero (OK) is________________? Physics Medium Full question → A zero almost B infinite almost C no prediction at all D may increase or decrease
83 The graphical representation of Ohms law is___________________? Physics Medium Full question → A hyperbola B ellipse C parabola D straight line
84 In liquids and gases the current is due to the motion________________? Physics Medium Full question → A negative charges B positive charges C both negative and positive charges D neutral particles
85 An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________? Physics Medium Full question → A 12 B 24 C 5 D 1100
86 Resistance of a wire on increasing its temperature will_________________? Physics Medium Full question → A increase with rise in temperature B decrease with rise in temperature C will remain same D depends upon altitude of experimentation
87 Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ? Physics Medium Full question → A 40 W bulb B 60 W blub C 100 W blub D all will burn equally brightly
88 Internal resistance is the resistance offered by________________? Physics Medium Full question → A source of EMF B conductor C resistor D capacitor
89 Which one is the best material for making connecting wires ? Physics Medium Full question → A iron B tungsten C silver D copper
90 Resistance of a super conductor is ______________________? Physics Medium Full question → A finite B infinite C zero D changes with every conductor
91 How much heat does a 40 W bulb generates in one hour ? Physics Medium Full question → A 144000J B 144J C 1.44J D 14J
92 One kilowatt hour is the amount of energy delivered during _______________? Physics Medium Full question → A one second B one day C one minute D one hour
93 When same current passes for same time through a thick and thin wire_________________? Physics Medium Full question → A more heat is produced in thick wire B more heat is produced in thin wire C no heat is produced in wire D less heat is produced in thick wire
94 A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________? Physics Medium Full question → A remains the same B is doubled C is halved D becomes zero
95 Resistance of a conductor depends upon_________________? Physics Medium Full question → A nature of conductor B dimension of conductor C physical state of the conductor D all of above
96 All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________? Physics Medium Full question → A same current B same current and potential difference C different current but same potential difference D different current and potential differences
97 Why should a resistance be introduced in a circuit in series deliberately ? Physics Medium Full question → A to increase current B to decrease current C to control current D just to give a good look to circuit
98 If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________? Physics Medium Full question → A 3600C B 7200C C 1C D 2C
99 Which one of the following materials is useful for making bulb filaments ? Physics Medium Full question → A constantan B nichrome C copper D tungsten
100 In the following figure, the terminal potential is ___________________ ? Physics Medium Full question → A zero B 2V C 12V D 36V