K A Tsokos Solutions for Chapter: Electromagnetic Induction (HL), Exercise 3: Test yourself

A 250 mF capacitor is charged by a battery of emf 12V. Calculate the energy stored in the capacitor.

A 250mF capacitor is charged by a battery of emf 12V. Estimate the time for which the lamp is lit, listing any assumptions you make. The capacitor discharges through a lamp rated 12V, 6.0W.

A capacitor of capacitance $25.0 \mu F$ Is charged by a battery of emf $48 V$. The battery is removed, and the capacitor is connected to a resistor of resistance $15 \mathrm{k\Omega }$ through which it discharges. The current value after a time of $0.20 \mathrm{s}$ is equal to $1.88\times {10}^{-K} \mathrm{A}.$ What is the value of K?

A capacitor of capacitance $25.0 \mu F$ Is charged by a battery of emf $48 V$. The battery is removed and the capacitor is connected to a resistor of resistance $15 k\Omega$ Through which it discharges. And charge value After $0.20s$ is $7\times {10}^{-4 }C.$

A capacitor of capacitance $250 \mathrm{\mu F}$ Is charged by a battery of emf $12 \mathrm{V}$. The battery is removed, and the capacitor is connected to a resistor of resistance $75 \mathrm{k\Omega }$ through which it discharges. If the voltage across the capacitor is $6.0 \mathrm{V}$ then the charge is equal to $1.5\times {10}^{-K} \mathrm{C}$. Find the value of k.

A capacitor of capacitance $250 \mathrm{\mu F}$ Is charged by a battery of emf $12 \mathrm{V}$. The battery is removed, and the capacitor is connected to a resistor of resistance $75 \mathrm{k\Omega }$ Through which it discharges. The current when the voltage across the capacitor is $6.0 \mathrm{V}$ is calculated as ___$\times {10}^{-5} \mathrm{A}$

Refer to the given figure. The input voltage is sinusoidal. Sketch a graph to show how voltage varies with time across diode B.

Refer to the given figure. The input voltage is sinusoidal. Suggest how the output can be made even smoother.