slyman
Jul17-07, 10:41 PM
An AM radio antenna has the shape of a coil with inductance 0.90 mH. A radio wave with frequency 1.2 MHZ induces a current of amplitude 5.2 nA in the coil. What is the amplitude of the induced voltage across the coil?
I really need your help. It's going to be on the test for tomorrow. Thanks in advance.
This is what I did, I'm not sure of it.
First, we get "w" from the frequency from equation w=2*Pi*f.
Next we find the reactance of the inductor as it matches the resistor.
XL=wL which eqauls the resistor R.
Then the induced voltage is simply V=IR. We already have the current and we calculated R.
Am I right? Please Help me out.
I really need your help. It's going to be on the test for tomorrow. Thanks in advance.
This is what I did, I'm not sure of it.
First, we get "w" from the frequency from equation w=2*Pi*f.
Next we find the reactance of the inductor as it matches the resistor.
XL=wL which eqauls the resistor R.
Then the induced voltage is simply V=IR. We already have the current and we calculated R.
Am I right? Please Help me out.