i) | V_R | = | IR | = 10 × 4 = 40 V

ii) | V_L | = | IX_L | = 10 × 8 = 80 V

iii) | V_C | = | IX_C | = 10 × 11 = 110 V

iv) | V_RLC | = | IZ | = 10 × 5 = 50 V