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Current Electricity
Question
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If the electric current in a lamp decreases by 5%, then the power output decreases by
  • 25%
  • 10%
  • 5%
  • 20%

Answer

B.

10%

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Some More Questions From Current Electricity Chapter

What conclusion can you draw from the following observations on a resistor made of alloy manganin?

Current A

Voltage V

Current A

Voltage V

0.2

0.4

0.6

0.8

1.0

2.0

3.94

7.87

11.8

15.7

19.7

39.4

3.0

4.0

5.0

6.0

7.0

8.0

59.2

78.8

98.6

118.5

138.2

158.0