Home › CBSE Class 12 (Science) › Physics › Moving Charges and Magnetism › In a moving coil galvanometer, what balances the…
In a moving coil galvanometer, what balances the magnetic torque?
AAir drag on the pointer
BA spring's counter torque
CGravity on the coil
DFriction at the pivots
Answer & Solution
Correct answer: B. A spring's counter torque
A spring supplies a restoring torque k times phi that equals NIAB at equilibrium, fixing the deflection.
Related questions
In 1946 Lawrence's team built an early version of which cyclotron type?What did Lawrence invent from the cyclotron design during the Manhattan Project?Which type of particle beam are cyclotrons primarily used for in radiotherapy?Cyclotron beams in particle therapy are mainly used to treat which condition?Which isotope made in cyclotrons is used for PET imaging?Space charge in a cyclotron beam refers to which effect?The cyclotron design is more space efficient than a linear accelerator because of what?In a cyclotron, what makes the particles orbit?