A coil of inductance L = 2.0 μH and resistance R = 1.0 Ω is connected to a source of constant emf ℰ = 3.0 V (Fig. 3.96).

Question 1

A coil of inductance L = 2.0 μH and resistance R = 1.0 Ω is connected to a source of constant emf ℰ = 3.0 V (Fig. 3.96). A resistance R₀ = 2.0Ω is connected in parallel with the coil. Find the amount of heat generated in the coil after the switch Sw is disconnected. The internal resistance of the source is negligible.

Question 2

Initially, after a steady current is set up, the current is flowing as shown. In steady condition

When the switch is disconnected, the current through R changes from i₁₀ to the right, to i₂₀ to the left. (The current in the inductance cannot change suddenly.). We then have the equation,

This equation has the solution

The heat dissipated in the coil is,

monuk · Answer 1 · 2018-12-03T03:59:26+0000

Initially, after a steady current is set up, the current is flowing as shown. In steady condition

When the switch is disconnected, the current through R changes from i₁₀ to the right, to i₂₀ to the left. (The current in the inductance cannot change suddenly.). We then have the equation,

This equation has the solution

The heat dissipated in the coil is,

A coil of inductance L = 2.0 μH and resistance R = 1.0 Ω is connected to a source of constant emf ℰ = 3.0 V (Fig. 3.96).

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