Question

29
in the circuit fig the voltmeter reads sov. What
is the sot resistance of the voltmeter?
300 S2
244
400
АЛАЛ-
75 Volt
a.
a)-1200 12
be) -700
700 12
c) 400 R
d) 300 2​

Answer 1

(a) 1200 resistance,

total resistance,400 is parallel and 300 is series

400

R=400R/400+R + 300

=400R+12000+300R/400+R

R= 700R+12×10×4/400+R

I=60(400+R)/700R+12×10×4. eq(1)

full solution is in photo