A long solenoid (1500 turns/m) carries a current of 20 mA and has an inside diameter of 4.0 cm. A long wire carries a current of 2.0 A along the axis of the solenoid. What is the magnitude of the magnetic field at a point that is inside the solenoid and 1.0 cm from the wire?
a. 78 ?T
b. 55 ?T
c. 48 ?T
d. 68 ?T
e. 2.0 ?T
b
You might also like to view...
Observer A sees a ruler moving by in a relativistic train and measures its length to be LA. Observer B moves together with the train and measures the length of the ruler to be LB. These two results will be such that
A) LA > LB. B) LA = LB. C) LA < LB. D) LA could be greater or smaller than LB depending on the direction of the motion.
What current is flowing in a resistor if 4.0 × 1016 electrons pass a point in the resistor in 0.50 s? (e = 1.60 × 10-19 C)
A) 0.013 A B) 78 A C) 0.31 A D) 6.3 A
Since the planet receives a net of about 100 W/m2, would a change of 4 W/m2 be considered substantial? Explain. (Chapter 17 shows that this is the size of the greenhouse effect.)
What will be an ideal response?
In the second step of the p-p fusion chain, light helium is formed by the fusion of a ______________ with a __________. A byproduct of the reaction is a ____________
Fill in the blank(s) with correct word