Home › NEET UG › Physics › Moving Charges and Magnetism › A galvanometer is converted into an ammeter of h…
A galvanometer is converted into an ammeter of higher range by connecting:
AA high resistance in series
BA low resistance in parallel
CA capacitor in parallel only
DAn inductor in series only
Answer & Solution
Correct answer: B. A low resistance in parallel
1. To carry more current, divert most of it past the sensitive coil.
2. So a LOW resistance (the SHUNT) is connected in PARALLEL with the galvanometer.
3. The shunt value is calculated so that exactly the full-deflection current still flows through the coil at the desired range.
4. High R in SERIES converts a galvanometer into a VOLTMETER.
_Source: NCERT Class 12 Physics Ch 4 §4.10 Galvanometer → Ammeter_
Related questions
An electron and a proton enter a magnetic field with the same kinetic energy, perpendiculaThe work done by a static magnetic force on a moving charge is:Magnetic field at a point on the axis of a circular loop, far from the loop (distance x ≫ The dimensional formula of the magnetic field B (in SI units of tesla) is:A cyclotron of magnetic field B accelerates positive charges of mass m, charge q. The cyclTorque on a magnetic dipole (current loop) of moment m placed in a uniform field B at anglTwo long parallel wires carry currents I₁ and I₂ in the SAME direction, separated by distaThe magnetic field inside a long straight solenoid with n turns per unit length carrying c