If ammeter shows electric current of magnitude $10 A$ . Then what would be the reading of voltmeter placed across the given resistor?

10 V

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20 V

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5 V

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15 V

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Solution

The correct option is B $20 V$
Given:
Electric current, $I = 10 A$
Resistance, $R = 2 Ω$

Using ohm's law, potential difference is:
$V = I R$
$V = 10 A \times 2 Ω$
$V = 20 V$
The reading on the voltmeter will be 20 V.

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If ammeter shows electric current of magnitude 10 A . Then what would be the reading of voltmeter placed across the given resistor?

The correct option is B 20 VGiven: Electric current, I=10 A Resistance, R=2 Ω Using ohm's law, potential difference is: V=IR V=10 A×2 Ω V=20 V The reading on the voltmeter will be 20 V.

If ammeter shows electric current of magnitude $10 A$ . Then what would be the reading of voltmeter placed across the given resistor?

The correct option is B $20 V$
Given:
Electric current, $I = 10 A$
Resistance, $R = 2 Ω$

Using ohm's law, potential difference is:
$V = I R$
$V = 10 A \times 2 Ω$
$V = 20 V$
The reading on the voltmeter will be 20 V.