Why is the coil of a voltmeter wound with wire of very high resistance?
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
Why is the coil of a voltmeter wound with wire of very high resistance?
(a) To allow large current through the meter for greater sensitivity
(b) To ensure that the meter can also be used as an ammeter
(c) To minimise the current drawn so that circuit conditions remain undisturbed
(d) Because a higher resistance reduces the voltage required for full-scale deflection, making the meter more sensitive