1) Voltage can be fatal of a. 10 V b. 20 V c. 15 V d. 50 V
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2) 2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends then, the current passing through each of the resistance is a. 1 mA b. 10 mA c. 5 mA d. 2 mA
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3) Glass, wood, plastic, silk, and fur are examples of a. metals b. plasma c. liquids d. insulators
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4) The energy supplied by a battery to unit positive charge flowing in a closed circuit is called a. electrical energy b. Electromotive force (EMF) c. mechanical energy d. kinetic energy
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5) The total current is equal to the sum of the currents in various resistances in a. series combination b. parallel combination c. circular combination d. random combination
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6) The wire maintained at high potential is known as a. Earth/ground wire b. livewire c. neutral wire d. delta wire
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7) The combination in which one end of each resistor is connected with the positive terminal of the battery and the other end is connected with the negative terminal is called a. series combination b. parallel combination c. circular combination d. random combination
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8) The rate of flow of electric charge through any cross-sectional area is called a. energy b. light c. heat d. current
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9) In a circuit 3 resistors 2&Omega, 3&Omega, 6Ω are connected (in parallel combination) across a battery of 6V, then the total current of the circuit should be a. 12A b. 3A c. 6A d. 2A
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10) Current can be fatal of a. 50 mA b. 30 mA c. 5 mA d. 10 mA
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11) In a light bulb of 60 W, the current in a bulb fluctuates in each second a. 50 times b. 100 times c. 25 times d. 70 times
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12) The induced charge on insulators a. resides on surface b. move inside c. change into electric current d. moves outwards
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13) As the temperature rises, the resistance of the thermistor a. decreases b. increases c. remains same d. none of above
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14) We can use the formula[ (watt × time of use in hours)/1000 × the cost of one unit] to find the amount of a. income tax b. electricity bill c. sales tax d. none of above
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15) 2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends, then equivalent resistance of the series combination should be a. 15kΩ b. 10kΩ c. 2kΩ d. 24kΩ
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16) The electric power enters our houses through a. 2 wires b. 1 wire c. 4 wires d. 3 wires
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17) A 60 W light bulb converts electrical energy into light and heat energy in each second of a. 30 J b. 60 J c. 120 J d. 20 J
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18) If we double both current and voltage keeping the resistance constant then power is a. unchanged b. halves c. doubles d. quadruples
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19) The current which does not change its direction of flow is called a. negative current b. direct current c. alternative current d. fixed current
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20) On applying an external magnetic field, free electrons move a. randomly b. in a specific direction c. circular d. against magnetic field
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