Question

An audio amplifier provides an alternating rms emf of 15.0V a loudspeaker connected to the amplifier has a resistance of 10.4 w what is the rms current in the speaker?

Answer 1

Answer:

Current in the speaker will be 1.442 A

Explanation:

We have given an audio amplifier of rms emf of 15 volt

So emf of the audio amplifier $V=15volt$

Resistance of the amplifier $R=10.4ohm$

We have to find the current

From ohm's ;aw we know that V = IR , here I is current and R is resistance

So $15=I\times 10.4$

I = 1.442 A

So current in the speaker will be 1.442 A