Answer: in parallel, as a shunt.
- A in parallel, as a shunt
- B in series with it
- C in both ways at once
- D in neither way
Correct answer: A. in parallel, as a shunt
Explanation: A low-resistance shunt in parallel diverts most of the current, letting the meter read large currents.
The magnetic field around a long straight current-carrying wire forms concentric circles, with direction given by the right-hand rule (point thumb along I, fingers curl in the direction of B).
Concept context
Magnetic force on moving charges and currents, the Biot-Savart law, Ampere's law, and the cyclotron - how electric currents create and respond to magnetic fields.