4.1. Simple phenomena of magnetism
A subsection of Physics, 0625, through 4. Electricity and magnetism
Listing 10 of 343 questions
State what is meant by a magnetic field. Define the direction of a magnetic field. shows a negatively charged metal sphere. – – – – – – – – On , draw four lines to show the electric field and its direction. shows a circuit. R1 R3 R2 V The three cells are identical and have zero resistance. The resistors R1, R2 and R3 are identical. The reading on the voltmeter is 6.0 V. When the diode is conducting, it has zero resistance and zero potential difference (p.d.) across it. Determine the e.m.f. of one cell. e.m.f. = Determine the ratio of the p.d. across R2 to the p.d. across R3. All the cells are reversed. 1. State and explain the change in current in R1. 2. Determine the new value of the ratio of the p.d. across R2 to the p.d. across R3.
0625_s23_qp_42
THEORY
2023
Paper 4, Variant 2
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