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प्रश्न
A constant current of 2.8 A exists in a resistor. The rms current is
विकल्प
2.8 A
about 2 A
1.4 A
undefined for a direct current
उत्तर
2.8 A
The constant current is equal to the rms value of current. So,
Irms = 2.8 A
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