Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

3. Electricity and Magnetism 81

(Fig. 82). The resistances of all the edges of

the tetrahedron are equal.

Indicate the edge of the frame that

should be eliminated to obtain the maximum

D

Fig. 82

change in the current Almax in the circuit,

neglecting the resistance of the leads.

3.25. The resistance of each resistor in the

Fig. 83

circuit diagram shown in Fig, 83 is the same

and equal to R. The voltage across the ter-

minals is U.