- Two long parallel wires carry equal currents in opposite directions. Do the negative fields cancel?
False
- square conducting loop with 1 meter sides is in y2 plabe. B of area increases uniformily from 3T-9T in 2s at a constant rate. What is the magnitude of emf that B induces on conductor?
3 volts (dF/dT)=(9-3)/2
- )Horizontal bar magnet is pushed towards center of loop. Which way is current formed, if any?
No current is formed because the magnet is laying flat.
- hen current flows through a capacitor in a circuit, electrons cross the gap from one plate to another, this is called displacement current. True or False?
False
- lectron wave has E in -z direction and B in +y direction. What direction does the wave propagate?
+x direction
- Which of the following will cause radiation to be emitted?
2 of the above, a and b
