A square coil of PQRS with sides 0.05m and 250 coils carries 1.6A and lies in a 0.4T magenetic field directed from left to right. The plane of the coil is parallel to the field with PQ perpendicular to the field.
a) Calculate the magnitude of the force on side PQ.
b) Calculate the magnitude of the force on side QR.
c) The coil rotates so that PQ movies upwards. Deduce the direction of the current in it.
d) Calculate the maximum torque on the coil.
Answers from Surfie:
a) 8 N
b) 0
c) Out of page
d) 0.4Nm
These answers seem wrong to me as it says that PQ is perpendicular to the mag. field, thus it should be cos90 right? Meaning the answer to a) should be 0 ? Or am I mistaken. Thanks
a) Calculate the magnitude of the force on side PQ.
b) Calculate the magnitude of the force on side QR.
c) The coil rotates so that PQ movies upwards. Deduce the direction of the current in it.
d) Calculate the maximum torque on the coil.
Answers from Surfie:
a) 8 N
b) 0
c) Out of page
d) 0.4Nm
These answers seem wrong to me as it says that PQ is perpendicular to the mag. field, thus it should be cos90 right? Meaning the answer to a) should be 0 ? Or am I mistaken. Thanks