Physics Physics Practice Problems Solutions Library

Intro to Current Solutions Library

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12 solutions

Intro to Current

Q. Where in the circuit of (Figure 1) is the current the largest? The current is the same at all points?

Solved • Jun 2, 2020

Intro to Current

Q. Can a wire carry a current and still be neutral--that is, have a total charge of zero? Explain. 

Solved • May 19, 2020

Intro to Current

Q. A certain ammeter has a resistance of 5.5 × 10-5 Ω on a scale which reads up to 2.9 A, and contains a 7.5-Ω galvanometer.What is the sensitivity of...

Solved • May 7, 2020

Intro to Current

Q. All other things being equal, current will be larger in a wire that has a larger value ofa) conductivity.b) resistivity.  c) The coefficient of cur...

Solved • Apr 24, 2020

Intro to Current

Q. Which of the following would double the amount of current flowing through a piece of metal wire? A) Halve the voltage across it. B) Double the volt...

Solved • Apr 21, 2020

Intro to Current

Q. A 14.0 gauge copper wire of diameter 1.628 mm carries a current of 12.5 mA.Part A What is the potential difference across a 2.00 m length of the wi...

Solved • Apr 14, 2020

Intro to Current

Q. In this problem denotes the emf provided by the source, and is the resistance of each bulb.Bulbs A, B, and C in the figure are identical and the sw...

Solved • Apr 14, 2020

Intro to Current

Q. Every minute, 120 C of charge flow through this cross section of the wire. The wire's current is:A) 120AB) 240AC) 2AD) Some Other valueE) 60A

Solved • Apr 10, 2020

Intro to Current

Q. The magnitudes of the current density and the diameters for wires 1 and 2 are given in the table. The current directions are indicated by the arrow...

Solved • Apr 9, 2020

Intro to Current

Q. Conceptual: A) Consider a lightbulb attached to a battery with wires. How must the light bulb be connected in order for it to light? B) Identify th...

Solved • Mar 25, 2020

Intro to Current

Q. An electric device delivers a current of 3.0 A for 10 seconds. How many electrons flow through this device? A) 2.0 B) 19 x 1020 C) 20 D) 1.9 x ...

Solved • Dec 22, 2016

Intro to Current

Q. Which one of the following is the correct unit for electric current?A) V/sB) C/sC) J/sD) A/s

Solved • Dec 22, 2016