# Physics-2 - force? (a) A (b) B (c) C (d) D (e) E •...

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www.free-test-online.com Physics worksheet #2 Electricity, DC circuits, magnetism Question #1: Three point charges of charge +Q are placed as shown above. At what point will a negative charge experience a force toward the bottom of the page? (a) A (b) B (c) C (d) D (e) E Question #2: Resistor R 1 = 5Ω and resistor R 2 = 10Ω are connected in series to a voltage source E = 60V. What is the ratio between the power dissipation in R 2 and the power dissipation in R 1 ? (a) 1 (b) 2 (c) 3 (d) 4 (e) 5 Question #3: Resistor R 1 = 4Ω and resistor R 2 = 6Ω are connected in series. If the tolerance of R 1 is 1% and the tolerance of R 2 is 2%, what is the tolerance of the equivalent resistor R? (a) .8% (b) 1% (c) 1.6% (d) 2% (e) 3%

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www.free-test-online.com Question #4: Five particles charged with the same charge +q move with the same speed v in a magnetic field B, as shown above. Which particle experiences the highest magnetic

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Unformatted text preview: force? (a) A (b) B (c) C (d) D (e) E • Question #5: Two wires of circular cross-sectional areas have resistances R 1 and R 2 . If ρ 1 = 2ρ 2 , l 1 = 2l 2 and r 1 = 2r 2 , what is the ratio R 1 /R 2 ? ρ 1 , ρ 2 are the resistivities of the two wires, l 1 , l 2 are the lengths of the two wires, r 1 , r 2 are the radii of the two wires. (a) 1 (b) 1/2 (c) 2 (d) 1/4 (e) 4 www.free-test-online.com • Question #6: Two metalic bars slide along metalic rails at speeds v 1 = .1m/s and v 2 = .2m/s as shown above. The bar and the rails are situated in a magnetic field of 4T. What is the induced voltage in the bar and rails? (a) 20mV (b) 30mV (c) 40mV (d) 120mV (e) 150mV www.free-test-online.com Solutions: Question #1: a Question #2: b Question #3: c Question #4: a Question #5: a Question #6: d...
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## This note was uploaded on 07/27/2010 for the course MATH MATH 1025 taught by Professor Tanny during the Spring '09 term at York University.

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Physics-2 - force? (a) A (b) B (c) C (d) D (e) E •...

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