Numerical Problems on Ampere’s Circuital Law Class 12 Physics · Moving Charges and Magnetism SQ Ampere’s Law and Solenoids Practice Set Apply $\oint \vec{B} \cdot d\vec{l} = \mu_0 I_{enclosed}$ and solenoid/toroid formulas Ch 4 · Moving Charges and Magnetism 1 A long solenoid consists of 20 turns per cm. What current is necessary to produce … Read more
Numerical Problems on Current Carrying Circular Loops Class 12 Physics · Moving Charges and Magnetism SQ Magnetic Field of Circular Loops Practice Set Apply $B = \frac{\mu_0 N I}{2R}$ and superposition principle Ch 4 · Moving Charges and Magnetism 1 Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of … Read more
Numerical Problems on Applications of Biot-Savart Law Class 12 Physics · Moving Charges and Magnetism SQ Magnetic Field due to a Straight Wire Practice Set Apply $B = \frac{\mu_0 I}{2\pi r}$ for long straight conductors Ch 4 · Moving Charges and Magnetism 1 A straight wire carries a current of 3 A. Calculate the magnitude … Read more
Numerical Problems on Biot-Savart Law Class 12 Physics · Moving Charges and Magnetism SQ Biot-Savart Law Practice Set Apply $d\vec{B} = \frac{\mu_0}{4\pi} \frac{I d\vec{l} \times \hat{r}}{r^2}$ Ch 4 · Moving Charges and Magnetism 1 A wire placed along east-west direction carries a current of 10 A from west to east direction. Determine the magnetic field … Read more
Numerical Problems on Kirchhoff’s Laws Class 12 Physics · Current Electricity SQ Kirchhoff’s Circuit Laws Practice Set Apply KCL $\sum I = 0$ and KVL $\sum \Delta V = 0$ Ch 3 · Current Electricity 1 Apply Kirchhoff’s rules to the loops PRSP and PRQP to write the expressions for the currents $I_1, I_2$ and … Read more
Numerical Problems on Heating Effects of Electric Current Class 12 Physics · Current Electricity SQ Electric Power and Heating Effects Practice Set Apply $H = I^2Rt$, $P = VI$, and $P = \frac{V^2}{R}$ Ch 3 · Current Electricity 1 Calculate the current flowing through a heater rated at 2 kW when connected to a 300 … Read more
Numerical Problems on Combination of Cells Class 12 Physics · Current Electricity SQ Grouping of Cells Practice Set Apply Series, Parallel, and Mixed Grouping Formulas Ch 3 · Current Electricity 1 Three identical cells, each of emf 2 V and internal resistance $0.2 \Omega$ are connected in series to an external resistor of $7.4 \Omega$. … Read more
Numerical Problems on EMF and Internal Resistance Class 12 Physics · Current Electricity SQ EMF, Terminal Voltage, and Grouping of Cells Practice Set Apply $V = E – Ir$, charging $V = E + Ir$, and Ohm’s Law Ch 3 · Current Electricity 1 A cell of emf 4 V and internal resistance $1 \Omega$ … Read more
Numerical Problems on Combination of Resistances Class 12 Physics · Current Electricity SQ Series and Parallel Combinations Practice Set Apply $R_s = R_1 + R_2 + \dots$ and $\frac{1}{R_p} = \frac{1}{R_1} + \frac{1}{R_2} + \dots$ Ch 3 · Current Electricity 1 Given the resistances of $1 \Omega, 2 \Omega$ and $3 \Omega$. How will you … Read more
Numerical Problems on Temperature Variation of Resistance Class 12 Physics · Current Electricity SQ Temperature Coefficient Practice Set Apply $R_t = R_0(1 + \alpha \Delta t)$ Ch 3 · Current Electricity 1 A platinum wire has a resistance of $10 \Omega$ at $0^{\circ}\text{C}$ and of $20 \Omega$ at $273^{\circ}\text{C}$. Find its temperature coefficient of resistance. … Read more
