Two resistors 220 ohm each are to be connected to a 110-V power source. To deter

Question

Two resistors 220 ohm each are to be connected to a 110-V power source. To determine whether they will be brighter when connected in series or in parallel, calculate the power they dissipate in each arrangement. what connection results in a greater brightness series or parallel? The magnetic force on a current-carrying wire in a magnetic field is the strongest when the current is in the direction of the magnetic field lines. the current is in the direction opposite to the magnetic field lines. the current is at a 180degree angle with respect to the magnetic field lines. the current is perpendicular to the magnetic field Vines. the current is at a 0degree angle with respect to the magnetic field lines.

Explanation / Answer

1.a) case: Series

current is constant (220/110 = 2 A)

Power at each resistor = i2*R = 4*110 = 440 W

b) case: Parallel

Voltage is constant, therefore Power = V2/R = (110)2/220 = 55 W

c) Hence series combination results in more brightness.

2. toward north

F=q(VxB)

3.radius would become half ,i.e radius= R/2.

4.option (D)

current is perpendicular to magnetic field lines.

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