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Class 10 Physics (India)

Course: Class 10 Physics (India) > Unit 3

Lesson 1: Electric current & circuit
Science
Class 10 Physics (India)
Electricity
Electric current & circuit
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Finding electric current

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Problem

Aditi builds a circuit with a bulb in it.
She observes that electrons with a net magnitude of charge, q, equals, 8, point, 0, space, start text, C, end text, pass through the bulb from point start box, start text, Q, end text, end box to point start box, start text, P, end text, end box in time, t, equals, 4, point, 0, space, start text, s, end text.
What is the current, I, passing through the bulb?
start box, start text, P, end text, end boxright arrowstart box, start text, Q, end text, end box
start box, start text, Q, end text, end boxright arrowstart box, start text, P, end text, end box
Direction of I:
Value of I, equals
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
start text, A, end text
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