In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° is
A.200 μC
B.400 μC
C.50 μC
D.25 μC
Answer:B
In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° is
A.200 μC B.400 μC C.50 μC D.25 μC