When a 12v battery is connected across an unknown resistor, there is a current of 2.5mA in the circuit. find
the value of resistance of the resistor.
19. The magnification produced by a plane mirror is +1. What does this mean?
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Answer:
Potential Difference (V) = 12V
Current (I) = 2.5 mA
= 0.0025 A
∴ V = IR
= 12 = 0.0025R
= 4800 Ω = R
If the Magnification of a Plane Mirror is +1, then it simply means that the image is virtual and it is as same size as the object.
I hope this helps.
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