Question

Find the electric field between 6 m and 8 m is–

• A. 10 V/m
• B. – 10 V/m
• C. 20 V/m
• D. – 20 V/m

Answer 1

Answer: (A)

10 V/m

Answer 2

E = –$\frac { \Delta \mathrm { V } } { \Delta \mathrm { r } }$ $\hat { \mathbf { i } }$ = –= –$\left( \frac { 0 - 20 } { 8 - 6 } \right)$

= +$\frac { 20 } { 2 }$ = 10 V/m