## Measurement and significant figures – problems and solutions

1. The length of an object measured using a micrometer is 15.08 mm. Determine the significant figures and the number of significant figures. A. 15.08 mm and three significant figures B. 1.508 mm and four significant figures C. 15.08...

## Quantities and units of physics – problems and solutions

1. The correct International Unit showed by student… A. R and S B. P and R C. P and Q D. Q and S Solution Student P : The international unit of length is meter (m), not centimeter (cm)...

## Dimensional analysis – problems and solutions

1. Based on the dimensional analysis, determine the following physics dimensions that have the same dimensions. A. work and power B. power and pressure C. force and momentum D. work and heat Known : Dimension of length = dimension...

## LRC Series AC Circuit – problems and solutions

1. Determine the electric current in circuit (1 µF = 10-6 F) Known : Resistor (R) = 12 Ohm Inductor (L) = 0.075 H Capacitor (C) = 500 µF = 500 x 10-6 F = 5 x 10-4 Farad...

## Magnetic field produced by two parallel current-carrying wires – problems and solutions

1. Two long parallel wires carrying the same currents 3-A. If the distance between both wires is 40 cm, determine magnetic field at point P. μo = 4π x 10−7 Wb A−1 m−1. Known : Electric current (I) =...

## Voltage and loops of transformers – problems and solution

1. Based on the above table, find R and P. Solution Transformer’s equation : Vs Np = Ns Vp dan Vp Ip = Vs Is Vs = secondary voltage, Vp = primary voltage, Ns = secondary loops, Np =...

## Magnetic field at the center of an arc of current – problems and solutions

1. Based on the figure below, if the radius of the curvature of the wire is 50 cm, determine the magnitude of the magnetic field at the center of curvature (at point 0, see figure below). (µo = 4π.10-7...

## Electromagnetic induction, induced EMF – problems and solutions

1. A coil replaced with another coil that has loops 2 times the initial loops and the rate of change of magnetic flux is constant. Determine the ratio of initial and final induced emf. Known : Initial loops (N)...

## Kirchhoff law – problems and solutions

1. If R1 = 2Ω, R2 = 4Ω, R3 = 6Ω, determine the electric current flows in the circuit below. Known : Resistor 1 (R1) = 2Ω Resistor 2 (R2) = 4Ω Resistor 3 (R3) = 6Ω Source of...

## The energy produced in the fusion reaction – problems and solutions

1. Based on the following equation of the fusion reaction, determine the energy produced in the fusion reaction! Solution Mass of reactant and product : Mass of reactant (mreactant) = 1.0078 amu + 1.0078 amu = 2.0156 amu Mass...