Part A = current

Part B = I_{2} + I_{3} – I_{1}

Part C = I_{3} ⋅ R_{3} – I_{2} ⋅ R_{2}

Part D = V_{b} – I_{1} ⋅ R_{1} – I_{3} ⋅ R_{3}

The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a steady state.

Apply the junction rule to the junction labeled with the number 1 (at the bottom of the resistor of resistance R_{2}).

Apply the loop rule to loop 2 (the smaller loop on the right). Sum the voltage changes across each circuit element around this loop going in the direction of the arrow. Remember that the current meter is ideal.

Now apply the loop rule to loop 1 (the larger loop spanning the entire circuit). Sum the voltage changes across each circuit element around this loop going in the direction of the arrow.

If the external resistance is then changed to R_{2} = 4.00 Ω, what is the value of the current I_{2} in the circuit?

Part A = A > (B = C)

Part B = C > (A = B)

Part C = D > A > (B = C)

Rank the resistors in the figure below (A to C) on the basis of the current that flows through them.

Rank the resistors in the figure below (A to C) on the basis of the current that flows through them.

Rank the resistors in the figure below (A to D) on the basis of the current that flows through them.

Part A = +y

Part B = 0

Part C = +x

Part D = -y

Part E = 0

Part F = -y

Part G = -x

The bent wire circuit shown in the figure is in a region of space with a uniform magnetic field in the +z direction.

Determine the direction of the magnetic force along segment 1, which carries current in the -x direction.

Determine the direction of the magnetic force along segment 2, which carries current in the -z direction.

etc.

Part A = 88.4 V

Part B = 0.025641 V

A battery with EMF 90.0 V has internal resistance R_{b} = 8.48 Ω.

What is the reading V_{v} of a voltmeter having total resistance R_{v} = 475 Ω when it is placed across the terminals of the battery?

What is the maximum value that the ratio R_{b} / R_{v} may have if the percent error in the reading of the EMF of a battery is not to exceed 2.50%?

Part A = See the screenshot

Consider an infinite sheet of parallel wires. The sheet lies in the xy plane. A current l runs in the -y direction through each wire. There are N/a wires per unit length in the x direction.

Write an expression for B(d),the magnetic field a distance d above the xy plane of the sheet.

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