Home / IB MYP 4-5 Physics | Electromagnetism |Electromagnetic forces and induction Practice Question

IB MYP 4-5 Physics | Electromagnetism |Electromagnetic forces and induction Practice Question

IB myp 4-5 physics – Practice Questions- All Topics

Topic :Electromagnetism-Electromagnetic forces and induction

Topic :Electromagnetism– Weightage : 21 % 

All Questions for Topic : Electric Fields,Static Electricity ,Magnetism,Magnetic Fields,Current,Power,Voltage,Electric Circuits,Electric and Magnetic Fields,Electromagnetic forces and induction

Question:

Explain why the ammeter registers a current when the switch is first closed, but after a short time, the current reading returns to zero.

▶️Answer/Explanation

Ans: When the switch is closed, the magnetic field changes so a current is induced in coil Y

Question:

The iron rod is replaced with a wooden one. Explain what the difference in the induced current would be.

▶️Answer/Explanation

Ans: This would weaken the magnetic field around coil X. The change in magnetic field would be smaller when the switch is closed, causing the induced current in coil Y to be reduced.

Question:

The number of turns in the wire in coil X is doubled. Explain why the ammeter reading is greater when the switch is closed.

▶️Answer/Explanation

Ans: This would strengthen the magnetic field around coil X. The change in magnetic field would be greater when the switch is closed, causing the induced current in coil Y to increase.

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