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Question 6. part a. Variant 42, M/J 2011. PLEAAAAAAAASE HELP.
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Physics A2 Question 4
- Thread starter Rommarrooo
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U knw (Io-peak current nd w-angular velocity)
I=Iosin (wt) so qus is I=9.9sin(380t). U cn deduce dat peak current (Io) is 9.9 nd w is 380
Hence ----> W=2 (pie) f so substitute 380 fr w nd find f which wil b 380/2(pie)= 60Hz
Den fr da 2nd part the rms current=peak current/square root 2
Whch is 9.9/square root 2 =7A
HOpe u understand
I=Iosin (wt) so qus is I=9.9sin(380t). U cn deduce dat peak current (Io) is 9.9 nd w is 380
Hence ----> W=2 (pie) f so substitute 380 fr w nd find f which wil b 380/2(pie)= 60Hz
Den fr da 2nd part the rms current=peak current/square root 2
Whch is 9.9/square root 2 =7A
HOpe u understand