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The p.d. across a lamp is 12 V. How many...

The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when: (a) a charge of 1C passes through it?
(b) a charge of 5C passes through it?
(c) a current of 2A flows through it for 10s?

Text Solution

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The correct Answer is:
(a) 12J (b) 60J (c) 240J
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Knowledge Check

  • The amount of charge that flows through a conductor when a current of 5A flows through it for 2 min are

    A
    1200 C
    B
    500 C
    C
    300 C
    D
    600 C

  • How many coulombs of electricity are c onsumed when a 100mA current is passed through a solution of AgNO_(3) for half an hour during an electrolysis experiment?

    A
    1080
    B
    18000
    C
    180
    D
    2000

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