Please Note: It may not always be possible to include the necessary special characters, superscripts, subscripts, etc. in e-mail responses to this group of exercises. We suggest that you discuss this matter with your professor/class and decide upon a system for indicating such characters. You may cut/paste some characters and/or Greek letters from Microsoft Word, using the Insert menu. Alternatively, we suggest that you agree upon abbreviations for or spell out symbols, Greek letters, or characters and indicate superscripts and subscripts by using "sup", "sub", or up/down carats.

L = 10.0 cm W = 5.00 cm v = 2.00 cm/s B = 3.00 T R = 2.00 Ω

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0070524076/58003/ch20_image1.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>

Determine the induced current in the loop or the force on the loop when the leading edge of the loop is at each specified position.

1		Induced current in the loop (magnitude and direction) before the loop enters the magnetic field. That is the leading edge of the loop is at x < 0 Need a Hint?
2		Induced current in the loop (magnitude and direction) when the leading edge of the loop is at 0 < x < L Need a Hint?
3		Induced current in the loop (magnitude and direction) when the leading edge of the loop is at L < x < 2L Need a Hint?
4		Induced current in the loop (magnitude and direction) when the leading edge of the loop is at 2L < x < 3L Need a Hint?
5		Induced current in the loop (magnitude and direction) when the leading edge of the loop is at x > 3L Need a Hint?
6		Force on the loop (magnitude and direction) when the leading edge of the loop is at x < 0 Need a Hint?
7		Force on the loop (magnitude and direction) when the leading edge of the loop is at 0 < x < L Need a Hint?
8		Force on the loop (magnitude and direction) when the leading edge of the loop is at L < x < 2L Need a Hint?
9		Force on the loop (magnitude and direction) when the leading edge of the loop is at 2L < x < 3L Need a Hint?
10		Force on the loop (magnitude and direction) when the leading edge of the loop is at x > 3L Need a Hint?

The following figure shows a flat circular coil inside a solenoid and concentric to the axis of the solenoid.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0070524076/58003/ch20_image2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>
RS = 4.00 cm Ns = 1000 RS = 100 Ω	roc = 1.00 cm NC = 10 RCA = 1.00 Ω	Ls = 40.0 cm VB = 25.0 V

11		Rate at which the magnetic field is changing in the solenoid. Need a Hint?
12		Rate at which the magnetic field is changing in the coil Need a Hint?
13		Rate at which the magnetic flux is changing in the solenoid Need a Hint?
14		Rate at which the magnetic flux is changing in the coil Need a Hint?
15		Emf induced in each turn of the solenoid Need a Hint?
16		Total Emf induced in the solenoid Need a Hint?
17		Emf induced in each turn of the coil Need a Hint?
18		Total Emf induced in the coil Need a Hint?
19		Self inductance of the coil Need a Hint?
20		Mutual inductance between the solenoid and the coil Need a Hint?
21		Current induced in the solenoid Need a Hint?
22		Current induced in the coil Need a Hint?

Power is transmitted 80.0 km at 22,000 V and is stepped down to 110 V at its destination. The transmission lines have a resistance of 1.50 × 10^-4Ω/m for each of the two lines. The current required at the destination is 15.0 A.

23		Current in transmission line Need a Hint?
24		Ratio of turns Np/Ns Need a Hint?
25		Power supplied at destination Need a Hint?
26		Power lost in transmission Need a Hint?

The following figure shows an inductor in a circuit with a resistor and a battery.

R = 30.0 Ω L = 10.0 H V = 5.00 V

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0070524076/58003/ch20_image3.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>

27		Time constant for the circuit Need a Hint?
28		Current in the circuit after two time constants Need a Hint?
29		Potential difference across the resistor after two time constants Need a Hint?
30		Potential difference across the inductor after two time constants Need a Hint?