Alternating current can not be measured by dc ammeter because
Alternating current can not be measured by dc ammeter because
- [AIEEE 2004]
- A
$ac$ cannot pass through dc ammeter
- B
Average value of complete cycle is zero
- C
$D.C.$ ammeter will get damaged.
- D
$ac$ changes its direction
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- [AIIMS 2009]
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An $AC$ source rated $220\, V , 50\, Hz$ is connected to a resistor. The time taken by the current to change from its maximum to the rms value is
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- [JEE MAIN 2021]
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