1) Substances that have constant resistance over a wide range of voltages are a. ohmic b. non ohmic c. resistive d. non resistive
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2) A resistor having resistance 6.2Ω is connected across a battery of 5 V using a wire of negotiable resistance. Current passes through the resistor are 0.4 A. The total power produced by the battery is a. 2 W b. 3 W c. 5 W d. 6 W
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3) As compare to short wires, long wires have a. more resistance b. no resistance c. less resistance d. same resistance
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4) The device that disconnects the supply automatically if current exceeds the normal value is known as a. circuit breaker b. fuse c. cable d. capacitor
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5) As per Ohm's law, V (potential difference) is equal to a. I(current)×R(resistance of the conductors) b. I(current)/R(resistance of the conductors) c. R(resistance of the conductors)/I(current) d. I(current) + R(resistance of the conductors)
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6) Ohm is denoted by the symbol a. π b. Ω c. θ d. λ
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7) The wire maintained at zero potential by connecting it to the Earth at the power station itself is called a. Earth/ground wire b. livewire c. neutral wire d. delta wire
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8) Watt is equal to one a. joule per second b. meter per second c. ampere per second d. farad per second
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9) The resistance and length of wire are a. inversely related b. directly related c. not related d. inversely proportional
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10) All electric wires are well insulated for the purpose of safety with some a. iron cover b. glass cover c. plastic cover d. wood cover
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11) The property of a substance which offers opposition to the flow of current through it is called a. energy b. capacity c. resistance d. voltage
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12) The time a current of 30 mA takes to deliver 30 C charge is a. 0.3 s b. 0.003 s c. 0.4 s d. 0.5 s
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13) The electric power enters our house through a. ground wire b. neutral wire c. live wire d. all of above
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14) Insulators can be easily charged by a. supplying electrons b. Electromotive force (EMF) c. friction d. protons
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15) If 2 resistors of 5kΩ and 7kΩ are connected in series across a 15V battery, then the current flowing through each of the resistance should be a. 2mA b. 3.6mA c. 5mA d. 1.25mA
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16) The wires carrying electricity are covered with good insulator, called a. fuse b. circuit c. rope d. cable
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17) To pass the current through ammeter it should be connected in a. parallel in circuit b. series in circuit c. direct circuit d. alternating circuit
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18) The rate of flow of charges is called a. static charge b. electric current c. Electromotive force (EMF) d. coulomb's force
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19) Potential difference across ends of conductor causes loss of a. mechanical energy b. electrical energy c. potential energy d. gravitational energy
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20) The SI unit of current is a. charge b. ohm c. volt d. ampere
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