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## Sample Question and Solution on Resistance of Potential Divider Circuit

Question Guide – DC Circuit – Resistance of a Potential Divider Circuit Question: The figure shows a circuit that uses a potential divider R. The resistance of R is 10 Ω. R is divided into 2 sections, ac and bc, by the slider c. Section ac of R has a resistance...

## Question Guide – Forces Action-Reaction Pairs

Question Guide – Forces Action-Reaction Pairs Question: The figure below shows a person sitting on a box that rests on the ground. Which of the following action-reaction pairs is correct? A The weight of the man and the normal force from the box supporting man....

## Sample Question and Solution on Pressure

Question Guide – Pressure Question: A fork tube contains air in one branch and a vacuum in the other as shown below. What is the pressure of the enclosed air? A d cm Hg B k cm Hg C (h-d) cm Hg D (h-k)cm Hg Solutions are open to Learning For Keeps students who are...

## Question Guide – Turning Effect of Forces and Density

Question Guide – Turning Effect of Forces and Density Question: A uniform rod has a wooden section and a solid rubber handle, as shown in the diagram below. The length of the handle is l and the length of the wooden section is 4.00 l. The rod balances at a...

## Question Guide – DC Circuit – MCQ

Question Guide – DC Circuit – MCQ Question: The diagram shows two identical lamps L1 and L2 connected to a rheostat and a battery. What happens to the brightness of the lamps as the contact J is moved towards the end X of the rheostat? L1 L2 A brighter...

## Sample Question and Solution on DC Circuit

Question Guide – DC Circuit This question is related to the topic “DC Circuit” in O Level Physics tuition. Question: A resistor of resistance 2.0 Ω is connected across a series of cells of e.m.f. 9.0 V by wires of negligible resistance. A current 4.0 A...