A galvanometer has a coil resistance of 100 Ω and shows full-scale deflection for a current of 1 mA. What shunt resistance must be connected across it to convert it into an ammeter reading up to 10 A?

PhysicsMediumHigh School (11–12)jee-main

To convert a galvanometer into an ammeter, a low-resistance shunt $S$ is connected in parallel so that most of the current bypasses the coil. The shunt value satisfies $I_g G = (I-I_g)S$ , giving $S = \dfrac{I_g G}{I-I_g}$ .

A galvanometer has a coil resistance of $100\ \Omega$ and shows full-scale deflection for a current of $1\text{ mA}$ . What shunt resistance must be connected across it to convert it into an ammeter reading up to $10\text{ A}$ ?

← All Quizzes

← Two coaxial solenoids of different radii carry current I in the same direction, one inside the other. Let F₁ be the magnetic force on the inner solenoid due to the outer one, and F₂ be the magnetic force on the outer solenoid due to the inner one. Which statement is correct?A galvanometer has a coil resistance of 100 Ω and gives full-scale deflection for a current of 1 mA. What shunt resistance should be connected to convert it into an ammeter reading up to 10 A? →

More onjee-main

Discussion (0)

Loading…