1A. Experimental tests have shown that hammerhead sharks can detect magnetic fields. In one test, 195 turns of wire are
Posted: Fri May 06, 2022 6:48 am
1A. Experimental tests have shown that hammerhead sharks
can detect magnetic fields. In one test, 195 turns of wire are
wrapped around a 8.0-m-long cylindrical tank. A magnetic field was
created inside the tank when this coil of wire carried a current of
4.7 A. Sharks trained by getting a good reward when the field was
present would later unambiguously respond when the field was turned
on. What was the magnetic field strength in the center of the tank
due to the current of the coil? Give your answer in Gauss (1 Tesla
= 10,000 Gauss)
1B. Based on the answer to your previous answer, complete the
following sentence:
"Hammerhead sharks ________ (can/cannot) detect the Earth's
magnetic field because the magnetic field in the tank is ______
(comparable/not comparable) to the Earth's magnetic field of 5.0 x
10-5 T. (0.5 Gauss)"
2. You are designing a portable sensor to measure magnetic
fields inside a house using the Hall effect. Your probe design is
1.8 mm-thick and 3.8 mm-wide semiconductor with a charge carrier
density of 2.1 x 1021 m-3 , which
is much less than a typical conductor. Passing a 55 mA current
through the probe generates a Hall effect voltage of 160 mV. What
is the magnetic field strength?
can detect magnetic fields. In one test, 195 turns of wire are
wrapped around a 8.0-m-long cylindrical tank. A magnetic field was
created inside the tank when this coil of wire carried a current of
4.7 A. Sharks trained by getting a good reward when the field was
present would later unambiguously respond when the field was turned
on. What was the magnetic field strength in the center of the tank
due to the current of the coil? Give your answer in Gauss (1 Tesla
= 10,000 Gauss)
1B. Based on the answer to your previous answer, complete the
following sentence:
"Hammerhead sharks ________ (can/cannot) detect the Earth's
magnetic field because the magnetic field in the tank is ______
(comparable/not comparable) to the Earth's magnetic field of 5.0 x
10-5 T. (0.5 Gauss)"
2. You are designing a portable sensor to measure magnetic
fields inside a house using the Hall effect. Your probe design is
1.8 mm-thick and 3.8 mm-wide semiconductor with a charge carrier
density of 2.1 x 1021 m-3 , which
is much less than a typical conductor. Passing a 55 mA current
through the probe generates a Hall effect voltage of 160 mV. What
is the magnetic field strength?