Contribute To Science With BOINC!

Have you ever wish that you are a scientist working hard at the cutting edge of research? Do you want to help humanity progress in the forefront of science? Now you can! And all you need is a working computer/ mobile device and BOINC! Introduction To BOINC   BOINC stands for Berkeley Open Infrastructure for Network Computing. BOINC is an open-source …

Read moreContribute To Science With BOINC!

Mock O Level Pure Physics Paper 1

This quiz contains practice questions for O Level Physics. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute …

Read moreMock O Level Pure Physics Paper 1

A.C. Generator (A Level)

An alternating current (A.C.) generator is an important application of electromagnetic induction. A.C. generator is an electromagnetic device which transforms mechanical energy into electrical energy. It consists of a rectangular coil of wire which can be rotated about an axis. The coil is located between the poles of two permanent magnets. As the coil rotates, the magnetic field through the …

Read moreA.C. Generator (A Level)

Practice MCQs For Magnetism & Electromagnetism

This quiz contains practice questions for GCE ‘O’ level topic: Magnetism & Electromagnetism. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you …

Read morePractice MCQs For Magnetism & Electromagnetism

Practice MCQs For Measurement of Physical Quantities

This quiz contains practice questions for Measurement Of Physical Quantities (O Level). There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you …

Read morePractice MCQs For Measurement of Physical Quantities

UY1: Angular Momentum

Torque Recall that torque of a force is: $$\begin{aligned} \tau &= Fl \\ &= rF \sin{\theta} \end{aligned}$$ Notice that the above is just: $$\vec{\tau} = \vec{r} \times \vec{F}$$ The direction of the torque is normal to the plane formed by $\vec{r}$ and $\vec{F}$ Angular Momentum The instantaneous angular momentum $\vec{L}$ of a particle relative to the origin $O$ is defined …

Read moreUY1: Angular Momentum